Download or read book A Shock Tube Study of the Recombination of Carbon Monoxide and Oxygen Atoms written by Anthony M. Dean and published by . This book was released on 1976 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt: For some time now this laboratory has been utilizing nitrous oxide as a high temperature source of oxygen atoms. Recently, an independent technique has been used to calibrate the detector system for oxygen atoms. With this calibration factor known, more refined experiments have been performed in which the absolute oxygen atom concentration can be monitored as a function of time. It was found that only slight modifications of earlier rate constant assignments were required to quantitatively explain these new results. In this light it is now felt that the dissociation kinetics of N2O are reasonably well understood. Thus the CO2 production rate in N2O/CO mixtures has been measured in an attempt to determine k sub r. It is shown that small amount of impurities can drastically affect the CO2 production rate. Analysis of this impurity effect has yielded estimates of the actual recombination rate constant between 2100 and 3200 K. The value of k sub r determined in this way is shown to be consistent with the recent measurements of k sub d reported by Wagner, and Kiefer, which yielded normal activation energies for CO2 dissociation.

Download or read book Recombination of Carbon Monoxide and Atomic Oxygen at High Temperatures written by Theodore A. Brabbs and published by . This book was released on 1966 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book THE RECOMBINATION OF OXYGEN ATOMS AT HIGH TEMPERATURES AS MEASURED BY SHOCK TUBE DENSITOMETRY written by and published by . This book was released on 1963 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Shock tube Measurement of the Recombination Rate of Oxygen written by Jack Wilson and published by . This book was released on 1962 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt: The recombination rate of oxygen was measured in a shock tube. The shock tube is unconventional in that airfoils have been inserted to expand the flow, and a constant-area channel placed behind the airfoils; thus the shock tube is effectively a low-expansion-ratio shock tunnel. The gas in the tube is first dissociated and set in motion by the shock wave, then flows through the expansion waves created by the airfoils, and is cooled, and finally enters the constant-area channel, where it recombines. Measurement of the degree of dissociation along the constant area channel enables one to calculate the recombination rate of the oxygen atoms. The measured recombination rate constants are compared with those obtained by reflecting the known dissociation-rate constants through the equilibrium constant. (Author).

Download or read book Shock Tube Study of the Recombination of O atoms by Ar Catalysts at High Temperature written by Kurt L. Wray and published by . This book was released on 1962 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Investigations of the Recombination of O Atoms with Co Over the Largest Range of Temperature and Pressure Practicable in the Shock Tube 1 Study of the Thermal Dissociation of Hydrogen Peroxide at Temperature Above 1000 K 2 Study of the Unimolecular Dissociation of Formaldehyde 3 written by E. Meyer and published by . This book was released on 1970 with total page 65 pages. Available in PDF, EPUB and Kindle. Book excerpt: The recombination reaction CO+O+M yields CO2+M was studied in incident and reflected shock waves from 1200 K to 2300 K. The recombination rate constant has a slightly negative apparent activation energy and confirms an unusual behaviour of the temperature dependence of the recombination rate constant. The unimolecular dissociation of hydrogen peroxide was investigated near the low pressure limit. Experiments at 20atm indicated the beginning of the fall-off region. In addition, light absorption corresponding to a species which forms and is consumed again during the reaction, was observed around 2300A. This absorption is possibly due to HO2. The thermal dissociation of formaldehyde at low concentrations in argon was investigated at temperatures 1400

Download or read book Shock Tube Measurements of Growth Constants in the Branched Chain Formaldehyde carbon Monoxide oxygen System written by and published by . This book was released on 1982 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Measurement of the Oxygen Recombination Rate in Shock Waves written by R. I. Soloukhin and published by . This book was released on 1969 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt: The recombination rate of oxygen atoms was measured directly in thermally pre-dissociated pure oxygen in a shock tube at a temperature above 3000K. A discrepancy of two to three orders of magnitude between various earlier, indirectly obtained experimental data prompted the author to attempt a direct measurement of the recombination rate, in view of its importance in the analysis of the combustion process and in high-temperature gas dynamics. (Author).

Download or read book A Shock Tube Study of the H2 O2 CO Ar and H2 N2O CO Ar Systems written by Anthony M. Dean and published by . This book was released on 1977 with total page 33 pages. Available in PDF, EPUB and Kindle. Book excerpt: Emissions at 450 nm and 4.27 micrometers have been measured when a variety of mixtures containing H2, CO, either O2 or N2O, and Ar were heated behind reflected shock waves to temperatures of 2000-2850 K and total concentrations near 5 x 10 to the 18th power molecule/cc. These emissions were used to obtain absolute concentration - time data for both oxygen atoms and carbon dioxide. The data were then compared to the results of numerical integrations of the likely mechanisms. It was observed that quantitative agreement between calculations and observations were obtained for the H2/CO/O2/Ar system using recent high temperature literature rate constants. For the H2/CO/N2O/Ar system, the rate constant for the reaction: H + N2O yields N2 + OH was adjusted so as to fit the data. Here it was found that a good fit to both (O) and (CO2) profiles could be achieved with k = 3 x 10 to the -9th power exp( -113kJ/RT) cc/molecule. Comparison to data at lower temperatures suggests that this might be another example of a 'Non-Arrhenius' rate constant. The implications of these results to studies of hydrocarbon oxidation are discussed. (Author).

Download or read book A Shock Tube Study of Recombination in the Lean Hydrogen oxygen Reaction Based on the Infrared Emission from Water Vapor written by Larry S. Blair and published by . This book was released on 1969 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book NASA Technical Note written by and published by . This book was released on 1970 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Shock Tube Measurements of Growth Constants in the Branched chain Ethane carbon Monoxide oxygen System written by and published by . This book was released on 1985 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Shock Tube Measurement of the Recombination Rate of Oxygen written by Eugene Joseph Kilroy and published by . This book was released on 1966 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Recombination Between Carbon Monoxide and Excited Oxygen Atoms written by Atomic Energy Research Establishment (Harwell, England) and published by . This book was released on 1965 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on with total page 994 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Recombination Between Carbon Monoxide and Excited Oxygen Atoms written by J. H. Tait and published by . This book was released on 1965 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Inventory of Advanced Energy Technologies and Energy Conservation Research and Development 1976 1978 written by Oak Ridge National Laboratory and published by . This book was released on 1979 with total page 1432 pages. Available in PDF, EPUB and Kindle. Book excerpt: